Remove misleading example
Remove misleading example

It is impossible to use nested node matchers on children that are not
nodes, like a `send` selector in this case.
This example is redundant, since the example above shows quite well how
to compose node matchers.

deivid-rodriguez/rubocop,meganemura/rubocop,tejasbubane/rubocop,jfelchner/rubocop,panthomakos/rubocop,jmks/rubocop,rrosenblum/rubocop,maxjacobson/rubocop,smakagon/rubocop,jmks/rubocop,vergenzt/rubocop,vergenzt/rubocop,jmks/rubocop,meganemura/rubocop,tdeo/rubocop,tejasbubane/rubocop,deivid-rodriguez/rubocop,tdeo/rubocop,rrosenblum/rubocop,maxjacobson/rubocop,bbatsov/rubocop,mikegee/rubocop,panthomakos/rubocop,mikegee/rubocop,vergenzt/rubocop,smakagon/rubocop,meganemura/rubocop,rrosenblum/rubocop,deivid-rodriguez/rubocop,panthomakos/rubocop,maxjacobson/rubocop,jfelchner/rubocop,tdeo/rubocop,jfelchner/rubocop,mikegee/rubocop,bbatsov/rubocop,tejasbubane/rubocop